Seiko Cal. 4428 - 401

Seiko 4428-401

The Seiko 4428-401 represents an important milestone in Seiko's 1985 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-10ed8d5c88b4]

Also known as: Bullhead

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
36mm
Case Thickness
11.5mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Silver
Jewels
22j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1985

Related Models

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